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From "Jeff Eastman (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAHOUT-65) Add Element Labels to Vectors and Matrices
Date Wed, 17 Jun 2009 16:04:07 GMT

    [ https://issues.apache.org/jira/browse/MAHOUT-65?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12720732#action_12720732
] 

Jeff Eastman commented on MAHOUT-65:
------------------------------------

This particular operation is just extracting the Vector's serialized String value from the
JsonPrimitive. The real heavy lifting is done on line 69:

{noformat}
    return (Vector) gson.fromJson(vector, cl);
{noformat}

For really big vectors I'd expect serialization and deserialization to be String-intensive.

> Add Element Labels to Vectors and Matrices
> ------------------------------------------
>
>                 Key: MAHOUT-65
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-65
>             Project: Mahout
>          Issue Type: New Feature
>          Components: Matrix
>    Affects Versions: 0.1
>            Reporter: Jeff Eastman
>            Assignee: Jeff Eastman
>         Attachments: MAHOUT-65-name.patch, MAHOUT-65-name.patch, MAHOUT-65-name.patch,
MAHOUT-65.patch, MAHOUT-65b.patch, MAHOUT-65c.patch, MAHOUT-65d.patch
>
>
> Many applications can benefit by accessing elements in vectors and matrices using String
labels in addition to numeric indices. Investigate adding such a capability.

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